Like material that functions to moisten and protect inner body surfaces. The viscous slippery substance that consists chiefly of mucin, water, cells, and inorganic salts and that is secreted as a protective lubricant coating by the cells and glands of the mucous membranes. The free slime of the mucous membranes, composed of secretion of the glands, various salts, desquamated cells, and leukocytes.
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5

Bloody stools:
You need to go and see a GI doctor asap. Bleeding from the colon can be due to cancer, inflammatory bowel disease, a variety of infectious agents and none of these should be left untreated. Go and see someone before you become severely ill.
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6

Mucus:
It appears that there was a mucus plug impacted on your uvula and irritation/inflammation occurred when it was pulled off. If bleeding and/nonhealing of the uvula persists, consult an otolaryngologist for treatment and in the meantime, bathe the uvula area with cold water which helps.However if brisk bleeding continues head to the hospital emergency room where urgent treatment can be given
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7

Need to be evaluated:
You should be evaluated by your primary doctor, gastro or surgeon as these symptoms are very non specific and may be related to a GI issue such as hemorrhoids or even a or other causes of GI tract bleeding.
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13

All of the options:
...you mentioned are of course possible. Without more information, we can't tell from here. Simple stool analysis by your doctor should address your concern & facilitiate appropriate treatment.
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17

Red color may be:
related to dyes in cough syrup. Mucus is a lubricant in our GI tract – so a small amounts needn't be a concern. However if there are large amounts of mucus especially if associated with blood or abdominal pain– that warrants evaluation.
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19

See an OB/GYN:
Right away. This could be one of several things, including a spontaneous abortion (miscarriage), infection, etc. You should be seen quickly, examined, diagnosed and treated.
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